Overview of HL series heatless regenerative dryers.

Transcription

1 Overview of HL series heatless regenerative dryers.

2 Billbert

3 Regenerative Desiccant Dryers MHL/HLS Series Heatless HL Series Heatless HI Series-Heated Internally HB Series Heated Blower HP Series Heated Purge

4 HL Heatless Regenerative Dryers Desiccant Absorbent Twin Tower Pressure Swing Regens Thermal Swing Heatless Heaterless (most accurate term)

5 Basic Design Components Two Towers Filled with Adsorbent Desiccant Activated alumina is most common

6 Difference between two types of Desiccant They are not interchangeable!!!

7 Difference between two types of Desiccant BIG DINKY DIMINUTIVE

8 Desiccant Bed Operation Fresh Bed Dry Air Out Wet Air Boundary Saturated Wet Air In

9 Dry air out Break Through Point ~0% humidity Mass Transfer Zone 100% humidity Wet air In

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12 Depressurized Drying Purge Air.0521 grains -40F/C dew point 100F inlet temperature 0 PSIG 100 PSIG grains grains grains This is 99.97% removal grains Where does it go?

13 0 PSIG Purge Air 0 PSIG 100 PSIG Purge air Air out of the dryer Air into the dryer

14 Drying Regenerating Regenerative Drying Cycles 100 PSIG 0 PSIG

15 Drying Repressurization Regenerative Drying Cycles 100 PSIG PSIG

16 Drying Repressurized Regenerative Drying Cycles 100 PSIG 100 PSIG

17 Depressurized Drying Regenerative Drying Cycles 0 PSIG 100 PSIG

18 V V Heatless Regenerative Dryer Outlet Purge orifice or valve V ) ( V 0 PSIG 100 PSIG Open purge valve Closed purge valve o Inlet x

19 V V Heatless Regenerative Dryer Outlet Purge orifice or valve V ) ( V Increasing pressure 100 PSIG Closed purge valve Closed purge valve x Inlet x

20 V V Heatless Regenerative Dryer Outlet Purge orifice or valve V ) ( V Equal pressure 100 PSIG 100 PSIG Closed purge valve Closed purge valve x Inlet x

21 V V Heatless Regenerative Dryer Outlet Purge orifice or valve V ) ( V Equal pressure 100 PSIG 100 PSIG Closed purge valve Closed purge valve x Inlet x

22 V V Heatless Regenerative Dryer Outlet Purge orifice or valve V ) ( V Equal pressure 100 PSIG 0 PSIG Closed purge valve Open purge valve x Inlet o

23 Interlock Logic System CONTROL AIR PROCESS AIR (100 PSIG) 0 PSIG VAN AIR 3-WAY SHUTTLE VALVE

24 CONTROL AIR PROCESS AIR 100 PSIG 0 PSIG VAN AIR 3-WAY SHUTTLE VALVE

25 CONTROL AIR 100 PSIG 100 PSIG VAN AIR 3-WAY SHUTTLE VALVE

26 CONTROL AIR CONTROL AIR PROCESS AIR 0 PSIG (100 PSIG) 0 PSIG Process Air 100 PSIG VAN AIR 3-WAY SHUTTLE VALVE VAN AIR 3-WAY SHUTTLE VALVE

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28 Follower

29 Follower

30 Pneumatic limit switches

31 Pneumatic limit switches Valve Position Indicator

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33 Standard control panel

34 Cycle Hold Standard control panel Failure to switch Pressure Switches

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36 EMCON II control panel

37 EMCON II Microprocessor Hygrometers Moisture sensors

38 Desiccant Capacity % Refrigerated Dryer Ahead of Heatless Dryers Desiccant Capacity vs. RH Relative Humidity

39 Instrument Air Quality Standard Taken from ISA S Dew Point, (at line pressure) Outdoor installations (where any part of the instrument air system is exposed to the outdoor atmosphere). The dewpoint at line pressure shall be at least 10 C (18 F) below the minimum temperature to which any part of the instrument air system is exposed at any season of the year. In no case should dew point at line pressure exceed 2 C (approximately 35 F)

40 Instrument Air Quality Standard ISA S7.3 (continued) 3.2 Dew Point, (at line pressure) (for the purpose of this Standard) The dew point of the air at line pressure of the compressed air system (usually measured at the outlet of the dryer system, or at any instrument air supply source, prior to pressure reduction). When presenting or referencing dew point, the value shall be given in terms of the line pressure; e.g., (our emphasis) -40C (-40 F) dew point at 100 psig. This is an example. The other section is the actual requirement

41 Anti-Flood System Receiver/anti flood tank 1000 SCFM 85F ambient 70% ambient RH = 176 gallons/day Liquid Level Alarm An aftercooler removes 2/3 of the condensed moisture, Or 117 gallons of water per day. When the separator drain fails, It floods the dryer and downstream equipment. Automatic Drain

42 Double Block and Bleed Open to atmosphere You can also close this valve and use a gauge. Dryer or Filter

43 The most common service problem is. Death by Drowning. A regenerative dryer can only remove moisture vapor (not liquid water).

44 Desiccant Bed Contamination Precondition your compressed air

45 HAVE A GOOD THANKSGIVING!

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